{
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  "lastUpdated": "2026-06-01T00:00:00Z",
  "description": "Source unique de vérité pour tous les métriques et chiffres affichés sur denisatlan.fr. v2.12 : Expert EC, FnTC, 46 médias (JDN x6 Éducation IA, StartBrain.ai, Andrew Baker), 93 profils, 70+ interventions.",
  "governance": {
    "principle": "SINGLE SOURCE OF TRUTH",
    "rule": "Toute page affichant un chiffre DOIT référencer ce fichier comme source",
    "updateProcess": [
      "1. Modifier ce fichier metrics.json",
      "2. Documenter le changement dans CHANGELOG.md",
      "3. Mettre à jour les pages HTML concernées",
      "4. Regénérer evidence/checksums.sha256",
      "5. Incrémenter la version"
    ]
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        "evidence_level": "Tier-3",
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        "dataset_url": "https://huggingface.co/datasets/ENDKOO/ai-roi-b2b-france-200-deployments",
        "doi": "10.5281/zenodo.17795133",
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        "last_verified": "2025-12-29",
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          "/barometre-ia-pme.html",
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        "note": "Inclus pour référence, mais période 24 mois est la référence principale",
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          "Communauté Challans Gois - Soirée des Entreprises (December 3, 2025)"
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        "dev_commercial": 1
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        "2024": 5,
        "2023": 7,
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          "social": 7,
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      "components": {
        "benefits": [
          "Temps économisé (converti en €)",
          "CA additionnel généré",
          "Coûts évités",
          "Gains productivité mesurés"
        ],
        "costs": [
          "Licences IA (abonnements ChatGPT, API)",
          "Formation équipes",
          "Temps déploiement",
          "Accompagnement externe",
          "Maintenance (12 ou 24 mois)"
        ],
        "exclusions": [
          "Infrastructures existantes",
          "Salaires fixes",
          "Bénéfices intangibles non mesurables"
        ]
      },
      "methodology": "/evidence/methodology/roi-calculation.html"
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    "french_formatting": {
      "decimal_separator": ",",
      "thousand_separator": " ",
      "examples": {
        "159.8": "159,8%",
        "82.5": "82,5%",
        "1234.56": "1 234,56"
      }
    },
    "consistency_rules": [
      "Toujours utiliser la virgule comme séparateur décimal en français",
      "Arrondir à 1 décimale pour les pourcentages",
      "Ajouter l'espace insécable avant % et unités",
      "Citer systématiquement la source (claims.json ou metrics.json)"
    ]
  },
  "changelog_reference": "/evidence/CHANGELOG.md",
  "claims_reference": "/evidence/claims.json",
  "license": "CC-BY-4.0"
}